Body implantable fabric having closed loop knit

ABSTRACT

A body implantable fabric includes an organ support device separated from a knit material and has a filament forming a chain of loops that extend along a length of the knit material. The chain of loops are coupled together by having each loop suspended by a neighboring loop, and at least one loop in the chain of loops having the filament tied around that one loop to form a closed loop.

BACKGROUND

Incontinence in men relates to a reduction or loss in urethral sphincterfunction. For example, the prostatic urethra is at times removed oraltered during prostate surgery, which can lead to a reduced ability inthe urethra to coaptate. Incontinence in women relates to a loss insupport of the female urethra, for example as one or more of the pelvicorgans prolapse, which allows urine to leak out of the urethra. Pelvicorgan prolapse is a disorder related to the dropping down (prolapse) ofthe bladder, rectum, or uterus caused by weakness or injury toligaments, connective tissue, or muscles of the pelvis.

A hernia is a protrusion of a body organ through the wall of the bodycavity.

Meshes are at times implanted into the body to support the urethra, orto support prolapsed organs, or to reinforce the wall of the bodycavity. Meshes include knit meshes and woven meshes.

FIG. 1 is a top view of a prior art knit mesh 10 including a filament 12knit on a path to form a chain of loops 14, where each loop 16 in thechain of loops 14 is suspended by a neighboring loop 18. In this manner,the loops 14 are secured as they are knit by passing a newly formed loop(e.g., loop 16) through a previously formed loop (e.g., loop 18). Thechain of loops that run left-to-right in FIG. 1 are referred to as awale W. The path that the filament 12 follows is referred to as a courseC. The loops 14, 16, 18 of the prior art knit mesh 10 will unravel ifpulled with a sufficient force, or if one of the loops is broken orsevered.

A woven mesh is not a knit mesh. A woven mesh is formed by threads thatrun parallel in a lengthwise direction (warp threads) and cross with aseparate set of parallel threads placed in a crosswise direction (weftthreads). The meandering course C that forms the loops 14, 16, 18 of theprior art knit mesh 10 provide the knit mesh 10 with greater elasticity(e.g., stretchiness) over the woven mesh since the loops move withineach other. Some surgeons prefer knit mesh materials over woven meshmaterials for body implantation around the generally curved body organs.

Knitted mesh materials are effective for use as body implantablefabrics. However, these knit mesh materials are susceptible tounraveling or tearing when pulled on during placement in the body, whichcan lead to undesirable tearing of the knit mesh.

SUMMARY

One aspect provides a body implantable fabric including an organ supportdevice separated from a knit material and having a filament forming achain of loops that extend along a length of the knit material. Thechain of loops are coupled together by having each loop suspended by aneighboring loop, and at least one loop in the chain of loops having thefilament tied around that one loop to form a closed loop.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings are included to provide a furtherunderstanding of embodiments and are incorporated in and constitute apart of this specification. The drawings illustrate embodiments andtogether with the description serve to explain principles ofembodiments. Other embodiments and many of the intended advantages ofembodiments will be readily appreciated as they become better understoodby reference to the following detailed description. The elements of thedrawings are not necessarily to scale relative to each other. Likereference numerals designate corresponding similar parts.

FIG. 1 is a top view of a prior art knit mesh.

FIG. 2A is a top view of one embodiment of a closed loop knit mesh.

FIG. 2B is an expanded view of a closed loop of the closed loop knitmesh illustrated in FIG. 2A.

FIG. 3A is a top view of one embodiment of a knit mesh with half of theloops closed.

FIG. 3B is a schematic of one embodiment of a needle path employed forknitting the closed loop knit mesh illustrated in FIG. 3A.

FIG. 4A is a top view of one embodiment of a knit mesh withsubstantially all of the loops closed.

FIG. 4B is a schematic of one embodiment of a needle path employed forknitting the closed loop knit mesh illustrated in FIG. 4A.

FIG. 5 is atop view of one embodiment of a body implantable device madefrom a closed loop knit mesh.

FIG. 6 is a schematic view of a sheet of closed loop knit mesh includinga layout of the body implantable device illustrated in FIG. 5 and alayout of a collection of coupons oriented in various directions on thesheet.

FIG. 7 is a front perspective view of a pelvis including the bodyimplantable device illustrated in FIG. 5.

FIG. 8 is a top view of one embodiment of a body implantable devicefabricated from a closed loop knit mesh and having two opposed arms.

FIG. 9 is a top view of one embodiment of a body implantable devicefabricated from a closed loop knit mesh and having multiple arms.

DETAILED DESCRIPTION

In the following Detailed Description, reference is made to theaccompanying drawings, which form a part hereof, and in which is shownby way of illustration specific embodiments in which the invention maybe practiced. In this regard, directional terminology, such as “top,”“bottom,” “front,” “back,” “leading,” “trailing,” etc., is used withreference to the orientation of the Figure(s) being described. Becausecomponents of embodiments can be positioned in a number of differentorientations, the directional terminology is used for purposes ofillustration and is in no way limiting. It is to be understood thatother embodiments may be utilized and structural or logical changes maybe made without departing from the scope of the present invention. Thefollowing detailed description, therethre, is not to be taken in alimiting sense, and the scope of the present invention is defined by theappended claims.

It is to be understood that the features of the various exemplaryembodiments described herein may be combined with each other, unlessspecifically noted otherwise.

Tissue includes soft tissue, which includes dermal tissue, sub-dermaltissue, ligaments, tendons, or membranes. As employed in thisspecification, the term “tissue” does not include bone.

Some medical procedures directed to addressing incontinence in men or topelvic floor repair in women include placing a knit mesh inside of thebody and pulling on the mesh to provide a desired level of tension ofthe mesh relative to the body organ that is being supported.

Some knitted meshes are “knit-to-width” on a machine that makes thedesired support device at a specific width. These knit-to-width supportshave some reinforcing structure along the perimeter, such as additionalstitches, that is applied to the edges of the knit-to-width support togive the support improved strength and reduce or eliminate stray orloose ends. The knit-to-width support devices are potentially expensiveto manufacture and are generally rectangular in shape since suchmachines lack the capability to knit complex shapes.

In contrast, embodiments provide a sheet of knit mesh having closedloops from which a support device is cut out or removed. The shed ofknit mesh closed loops is suitable for body implantation and has atleast one loop in a chain of knitted loops that includes a filament tiedaround one of the loops to form a closed loop. The shape of the devicesthat may be removed from the sheet of knit mesh closed loops isessentially unlimited and the unit cost is substantially lower thanknit-to-width supports. In addition, the device removed or cut out fromthe sheet of knit mesh closed loops may have frayed or severed ends, butthese ends do not unravel the knit since the knit material includes atleast one, and like several, closed loops.

The sheet of knit mesh closed loops provides the support devices withgood stretch/elasticity (about 200% at about 15 lbf) and tear resistanceof at least 5 pounds force (lbf) in both the machine and the crossdirection. Support devices removed from the sheet of knit mesh closedloops have improved tear resistance over devices removed from sheets ofknit loops, which allows the surgeon to pull on arms of the supportdevice to apply tension or pressure to the organs that are beingsupported without tearing the arms.

FIG. 2A is a top view of one embodiment of a closed loop knit mesh 20.The closed loop knit mesh 20 has a filament 22 forming a chain of loops24 that extend along a length of the knit material to form a wale W,where the chain of loops 24 is coupled together by having each loop 26suspended by a neighboring loop 28, and at least one loop 30 in thechain of loops 24 has the filament 22 tied around that one loop 30 toform a closed loop 32. The closed loop 32 is formed by the filament 22that is placed to individually encircle or terminate the loop 30. In oneembodiment, the closed loop knit mesh 20 is provided as a sheet ofmaterial from which a body implantable support is removed for use in apatient.

FIG. 2B is an expanded view of the closed loop 32. The filament followsa path that loops through the neighboring loop 26, and includes anascending loop segment 34 coupled to a descending loop segment 36 by atransverse loop segment 38. The transverse loop segment 38 extends fromthe descending loop segment 36 and is tied around the ascending loopsegment 34. The closed loop knit mesh 20 is illustrated as having oneclosed loop 32, although other closed loop knit meshes are describedbelow having multiple closed loops.

It has been surprisingly discovered that the closed loop knit mesh 20provides support devices that, when removed from the sheet of the closedloop knit mesh 20, have significantly improved tear resistance ascompared to meshes that are knit without closed loop(s). For example,when an open loop knit mesh similar to the knit mesh 10 (FIG. 1) iscompared to the closed loop knit mesh 20, where the meshes have acomparable basis weight of about 90-110 grams per square meter, the openloop knit mesh 10 will have a tear resistance of about 3 lbf in adirection across the wale W and the closed loop knit mesh 20 will have atear resistance of about 7 lbf in a direction across the wale W. Inother words, for similar basis weights, the closed loop knit mesh 20provides over a 100% improvement in cross-wale tear resistance over theprior art open loop knit mesh 10.

Body implantable fabrics are suitably fabricated from meshes having abasis weight of between about 80-120 grams per square meter, and forthese basis weights, the closed loop knit mesh 20 described aboveprovides the body implantable fabric with a tear resistance of not lessthan 5 lbf in any direction (i.e., across the wale W or across thecourse C). In one embodiment, for the basis weights between 80-120 gramsper square meter, the closed loop knit mesh 20 described herein providesbody implantable devices fabricated from the closed loop knit mesh 20with about a 100% improvement in tear resistance in its weakestdirection as compared to open loop knit meshes illustrated in FIG. 1.

The filament 22 of the closed loop knit mesh 20 is a polymer filament ora natural fiber filament. In one embodiment, the filament 22 is apolypropylene filament having a diameter of about 0.0075 inches. Othersuitable filaments include filaments fabricated from other polymers ornatural materials, such as silk, cotton, or wool.

FIG. 3A is a top view of one embodiment of a knit mesh 40 having half ofthe loops closed. The knit mesh 40 includes a first filament 42 thatforms a first chain of loops 44 along a first wale W1 and a secondfilament 46 that forms a second chain of loop 48 along a second wale W2.The first filament 42 is tied around individual alternating loops 44 ain the first chain of loops 44 and the second filament 46 is tied aroundalternating loops 48 a in the second chain of loops 48 to provide theknit mesh 40 with approximately half of the loops closed.

FIG. 3B is a schematic of one embodiment of a needle path 50 employedfor knitting the closed loop knit mesh 40 illustrated in FIG. 3A. Thefilament 42 is stitched along the path 50, where the path 50 guides thefilament 42 along an ascending loop segment 54 and a descending loopsegment 56 that culminates in a transverse loop segment 58 that is tiedaround the ascending segment 54 before moving on to the next loop in thestitch along the wale. It is to be understood that the black dotsprovided in the schematic view of FIG. 3B do not necessarily have aphysical presence in real space but are provided to give a perspectiveto the path 50 that is followed by a needle that places the filament 42.

In general, the closed loop knit mesh 40 is fabricated on a machineusing one or more needles. For example, a single needle could beemployed to stitch a single filament 42 along repeated paths 50 to forma closed loop knit mesh 40. Alternatively, multiple needles attached tomultiple bars of a knitting machine are moved along the path 50 tofabricate the closed loop knit mesh 40 from multiple stands offilaments.

FIG. 4A is a top view of one embodiment of a knit mesh 60 having all ofthe loops closed. The knit mesh 60 includes a first filament 62 thatforms a first chain of loops 64 along a first wale W1 and a secondfilament 66 that forms a second chain of loop 68 along a second wale W2.The first filament 62 is tied around each individual loop 64 (forexample at 65) and the second filament 66 is tied around each individualloop 68 (for example at 69) to provide the knit mesh 60 withapproximately all of the loops closed.

FIG. 4B is a schematic of one embodiment of a needle path 70 employedfor knitting the closed loop knit mesh 60 illustrated in FIG. 4A. Thefilament 62 is stitched along the path 70, where the path 70 guides thefilament 62 along an ascending loop segment 74 and a descending loopsegment 76 that culminates in a transverse loop segment 78 that is tiedaround the ascending loop segment 74 at 65 before moving on to the nextloop in the stitch along the wale. Again, the black dots provided in theschematic view of FIG. 4B do not necessarily have a physical presenceand the closed loop knit mesh 60 is suitably fabricated on a machineusing one or more needles.

FIG. 5 is a top view of one embodiment of a body implantable support 100as suitably fabricated from the closed loop knit meshes 20, 40, or 60.In one embodiment, the support 100 is a body implantable support devicethat is die-cut from one of the closed loop knit meshes 20, 40, or 60and is employed to treat incontinence in a male patient.

In one embodiment, the support 100 includes a body 102 with a first pairof arms 104, 106 extending from the body 102 and a second pair of arms108, 110 extending from the body 102. In one embodiment, each of thefirst pair of arms 104, 106 is disposed on a major axis A such that arm104 is opposed to arm 106. In one embodiment, arm 108 is parallel to arm110 and both extend from the body 102 substantially perpendicular to themajor axis A. In one embodiment, the support 100 is fabricated as anincontinence treatment support and arms 104, 106 are provided astransobturator arms and arms 108, 110 are provided as pubic arms orsuprapubic arms.

The support 100 is fabricated from one of the closed loop knit meshes20, 40, or 60 and is so configured to have improved tear resistance overknit meshes that do not have a closed loop or multiple closed loops. Inone embodiment, the direction of the wales W of the closed loop knitmesh 20, 40, 60 run along the trans obturator arms 104, 106 asillustrated in FIG. 5, and the suprapubic arms 108, 110 are orientedperpendicular to the axis A and are aligned with the courses C of theclosed loop knit meshes 20, 40, or 60.

During implantation of the support 100, the trans obturator arms 104,106 are placed in tension such that the body 102 elevates and compressesthe tissue surrounding the male urethra. Trans obturator arms exhibit atendency to tear in the direction perpendicular to the axis A (e.g.,across the arm). The closed loop knit meshes 20, 40, or 60 provide thesupport 100, and in particular the trans obturator arms 104, 106, withimproved cross-arm tear resistance of 5 lbf or more for a basis weightof between about 90-110 grains per, square meter, as described below.

FIG. 6 is a schematic view of a sheet 120 of the closed loop knit mesh60 (FIG. 4A) including a layout for the removal of the support 100 and alayout for the removal of a collection of coupons 122 oriented invarious directions on the sheet 120. The support 100 is removed from thesheet 120 of knit mesh material 60 by die cutting, laser cutting, orheat cutting. The coupons 122 are removed from the sheet 120 along thedirections illustrated. For example, the coupon 131 is removed from thesheet 120 in the Direction 1 that is perpendicular to the axis A andperpendicular to the direction of the wales W (FIG. 5). The coupon 132is removed from the sheet 120 in a Direction 2 that is about midwaybetween Direction 1 and the Direction 3 along which the coupon 133 isoriented. The coupon 133 is aligned parallel with the wales W andperpendicular to the courses C (FIG. 5). The coupon 134 is orientedmidway between the coupon 133 and the coupon 135, where the coupon 135is oriented in the Direction 5, or 180 degrees out of phase fromDirection 1 of the coupon 131.

Although FIG. 5 and FIG. 6 illustrate the arms 104, 106 aligned with theWale W, it is to be understood that the orientation of the arms 104, 106is not limited by the illustrated figures and the arms 104, 106 may beoriented in other directions.

Comparative Examples

Comparative Mesh 1 refers to the coupons 122 that were removed from thesheet 120 of the closed loop knit mesh 60 (at approximately one-half ofthe size as specified by ASTM D2261).

PA mesh refers to similar coupons remove from the prior art open loopknit mesh 10 (FIG. 1) along the Directions 1, 2, . . . 5 illustrated inFIG. 6.

The Comparative Mesh 1 and the PA mesh were evaluated for tensilestrength (Table 1) and tear resistance (Table 2) as listed below.

TABLE 1 Tensile Strength (lbf) Coupon Direction PA mesh Comparative Mesh1 Direction 1 (wales W) 12.9 26.0 Direction 2 (45°) 22.0 20.8 Direction5 (Courses C) 25.3 32.4

TABLE 2 Tear Resistance (lbf) Coupon Direction PA mesh Comparative Mesh1 Direction 1 (wales W) 3.3 7.1 Direction 2 4.5 11.4 Direction 3 10.610.4 Direction 4 11.5 11.6 Direction 5 11.7 10.8

Table 3 below compares the physical properties of the prior art openloop knit mesh (PA mesh) to the closed loop mesh 60 (Comparative Mesh 1with all of the loops closed) and the closed loop mesh 40 (ComparativeMesh 2 with half of the loops closed).

TABLE 3 Physical Properties Thickness Basis Weight Courses per Pore sizeMesh (mils) (g/m²) inch (mm²) PA mesh 23.5 110 36 0.631 Comparative 25.091.4 29 0.734 Mesh 1 Comparative 26.4 110 36 0.420 Mesh 2

The body implantable support 100 fabricated from the closed loop mesh 60has significantly improved tensile strength along the Direction 1 (e.g.,along the wales W corresponding to the trans obturator arms 104, 106),and significantly improved tear resistance in the Direction 1 and theDirection 2, which allows a surgeon to pull on the trans obturator arms104, 106 during implantation of the support 100 while minimizing theundesirable possibility of tearing the arms 104, 106.

The body implantable support 100 fabricated from the closed loop mesh 60has provides the trans obturator arms 104, 106 with an elongation ofabout 270% at an elongation-to-break force of about 21 lbf, which issimilar to meshes fabricated from open loop meshes that have anelongation of about 330% at an elongation-to-break force of about 25lbf. That is to say, the body implantable support 100 fabricated fromthe closed loop mesh 60 has acceptable elongation properties along withimproved tear resistance.

FIG. 7 is a front perspective view of a pelvis P including the bodyimplantable support 100. The support 100 is provided as a four-armsub-urethral sling configured to support tissue surrounding a maleurethra and relieve incontinence in the male user. In one embodiment,the support 100 is fabricated from the closed loop knit material 60 andhas a thickness of between 0.018-0.028 inches, a basis weight of between85-115 grains per square meter, and a pore size of between 0.35-0.80square millimeters.

The support 100 is operatively positioned at or distal to the urethralregion 150. The trans obturator arm 104 extends through a first one ofthe obturator foramen OF and the opposing trans obturator arm 106extends through the opposing obturator foramen OF. The trans obturatorarms 104, 106 are coupled to a respective one of the descending rami152, 154 of the hipbones 156, 158, respectively. The suprapubic arms108, 110 are shown in a “down” position prior to being implanted intotissue above the location where the arms 104, 106 are attached to thedescending rami 152, 154.

The support 1130 is implanted, for example, with the patient in alithotomy. A vertical perineal incision is made in the midlinedissecting to expose the tissue around the urethra near the descendingpubic rami 152, 154 bilaterally. The bulbar spongiosis is left intact. Asuprapubic transverse incision is made approximately 1 cm proximal and 3cm lateral to the midline on either side. A suitable introducer (notshown) is inserted from the transverse incision and tunneled eithersuperficially anterior to the pubic symphysis or retropubically to exitthrough the initial perineal incision. A respective one of the pubicarms 108, 110 is attached to the introducer and pulled through thesuprapubic incision. The same maneuver is repeated with the other of thearm 108, 110. In one embodiment, the arms 108, 110 are inserted throughthe perineal incision by attaching them to the introducer and tunnelingthe introducer and the arms 108, 110 either superficially anterior tothe pubic symphysis or retropubically to exit through the suprapubicincisions. In one embodiment, the introducer is employed to create theexit opening in the abdomen through which the arms 108, 110 are thenguided suprapubically.

FIG. 8 is a top view of one embodiment of a body implantable device 200fabricated from the closed loop knit mesh 20, 40, or 60 and has twoopposed arms. In one embodiment, the support 200 is die-cut from one ofthe closed loop knit meshes 20, 40, or 60 and is employed to treatincontinence in a female patient.

In one embodiment, the device 200 is provided as an incontinencetreatment tape configured to support tissue surrounding a female urethraand includes a body 202 with one pair of transobturator arms 204, 206,with each arm 204, 206 extending from an opposed side of the body 202and oriented on a major axis B. The device 200 is configured to providea lifting suspension to the female urethra without unduly applyingtension to the relatively short (˜2 cm) urethra of the female. Theclosed loop knit mesh of the device 200 has improved tear resistanceover known knit mesh female incontinence tapes, which allows the surgeonto implant and manipulate the device 200 with a reduced or eliminatedchance of tearing one or both of the trans obturator arms.

In one embodiment, the body implantable device 200 has a length ofapproximately 60 cm and a width of approximately 2.5 cm. The device 200is implanted in a minimally invasive surgery by forming midlinepara-urethral vaginal incision to the region of the middle third of theurethra. The surgeon inserts a finger or other suitable instrument intothe vaginal incision to identify the obturator foramen. The surgeonforms a separate skin incision opposite the location so identifiedrelative to the obturator foramen, for example in the groin, to providean opening through which a needle is passed through the obturatorforamen and outward exterior to the body.

In one approach, a needle (not shown) is introduced into this skinincision perpendicular to the perineum for about 15 mm, passing throughthe internal obturator muscle outside the ischiopubic branch, and isguided by the finger of the surgeon opposite the obturator foramen tothe vaginal incision. The end of one of the arms 204, 206 is engagedwith the needle that now projects from the vaginal incision. The needleis retracted back through its path to place the arm 204 or 206 throughthe obturator foramen. Thereafter, the body 202 of the device 200 isplaced between the Alban fascia and the periurethral fascia. A similarmaneuver is conducted on the opposing side of the patient for theopposite arm 204 or 206. When the tape device 200 is so positioned, thesurgeon appropriately tensions the body 202 of the tape device 200 tosuspend and support the urethra.

The excess portion of the tape device 200 exterior the body is cut offflush with the skin and the skin incision is suitably immobilized.

FIG. 9 is a top view of one embodiment of a body implantable device 300fabricated from one of the closed loop knit meshes 20/40/60 to includemultiple arms. In one embodiment, the device 300 is die-cut from one ofthe closed loop knit meshes 20, 40, or 60 and is employed to repair apelvic floor in a female patient. In one embodiment, the implantabledevice 300 is configured to relieve pelvic organ prolapse in women whenimplanted and includes a support body 302 with at least three arms 304extending from the support body 302, an interconnecting member 305 thatis coupled to each of the arms 304, and an adjustable anchor 307slidably coupled to each of at least two of the interconnecting members305.

The adjustable anchors 307 are configured for bi-directional movementalong the interconnecting member 305 and exert a compressive forcegenerating frictional interference between the adjustable anchor 307 andthe interconnecting member 305. The frictional interference between theadjustable anchor 307 and the interconnecting member 305 inhibits thebi-directional movement of the adjustable anchor 307 along theinterconnecting member 305 unless sufficient force is applied toovercome the frictional interference.

The arms 304 in combination with the interconnecting members 305 and theadjustable anchors 307 allow the device 300 to be implanted in a bodyand adjusted into a desired and tensioned position. The interconnectingmembers 305 and the adjustable anchors 307 obviate the use of multipleskin exit punctures, and eliminate the use of retriever components andsleeves around the arms 304 that are at times employed when implantingsupport bodies having arms.

The support body 302 is non-rectangular and the device 300 includes fourarms 304 extending from the non-rectangular support body 302. In oneembodiment, the support body 302 has a curved outside perimeter withbilateral symmetry relative to a central longitudinal axis of thenon-rectangular support body 302. In one embodiment, the support body302 has four arms 304 and includes a central tail 306 located betweentwo of the arms 304. The central tail 306 is configured for attachmentto a suitable pelvic landmark, such as a ligament or other tissue. Inone embodiment, the support body 302 is fabricated from a porous closedloop knit mesh 20/40/60 as described herein and is compatible withbiological in-situ tissue ingrowth after implantation.

In one embodiment, the arms 304 include a first arm segment 310extending from support body 302 and a second arm segment 312 extendingfrom the first arm segment 310, where the interconnecting members 305extend from the second arm segment 312.

In one embodiment, the first arm segments 310 extend 1 cm or more fromthe support body 302. In one embodiment, one or more of the first armsegments 310 is provided as a “stubby” arm segment that extends from thesupport body 302 by less than 1 cm, for example. The second arm segment312 extends from the first arm segment 310 (whether of the “stubby”format or not). The interconnecting member 305 is attached to the secondarm segment 312 and one or the other of the adjustable anchor 307 or afixed anchor (not shown) is attached to the interconnecting member 305.

In one embodiment, an interconnecting member 305 is attached to each arm304 and an adjustable anchor 307 is attached to each interconnectingmember 305. In one embodiment, an interconnecting member 305 is attachedto each arm 304 and a fixed anchor is attached to at least one of theinterconnecting members 305. It will be recognized that the implantableanatomical device 300 could include one or more adjustable anchors 307with anywhere from zero to one or more fixed anchors. It is to beappreciated, then, that the device 300 could employ any number ofadjustable anchors 307, with or without any number of fixed anchors.

Although specific embodiments have been illustrated and describedherein, it will be appreciated by those of ordinary skill in the artthat a variety of alternate and/or equivalent implementations may besubstituted for the specific embodiments shown and described withoutdeparting from the scope of the present invention. This application isintended to cover any adaptations or variations of medical devices asdiscussed herein. Therefore, it is intended that this invention belimited only by the claims and the equivalents thereof.

1. A body implantable fabric comprising: an organ support deviceseparated from a knit material and comprising filament forming a chainof loops that extend along a length of the knit material, the chain ofloops is coupled together by having each loop suspended by a neighboringloop, and at least one loop in the chain of loops includes the filamenttied around said one loop to form a closed loop.
 2. The body implantablefabric of claim 1, wherein the knit material comprises a first filamentforming a first chain of loops and a second filament different than thefirst filament that forms a second chain of loops, the first chain ofloops coupled with the second chain of loops.
 3. The body implantablefabric of claim 1, wherein each loop in the chain of loops has thefilament placed to individually encircle each loop to form a chain ofclosed loops.
 4. The body implantable fabric of claim 3, wherein theorgan support device includes a body portion and an arm extending fromthe body portion, the arm having a tear resistance of not less than 5lbf.
 5. The body implantable fabric of claim 1, wherein a plurality ofthe loops in the chain of loops has the filament placed to encircle eachindividual one of the plurality of the loops to form a chain ofhalf-closed loops.
 6. The body implantable fabric of claim whereinplurality of the loops in the chain of loops is approximately one-halfof the loops in the chain of loops.
 7. The body implantable fabric ofclaim 1, wherein the closed loop comprises an ascending loop segmentcoupled to a descending loop segment by transverse loop segment.
 8. Thebody implantable fabric of claim 1, wherein the organ support device isseparated from a larger sheet of the knit material and includes a bodyportion and at least one pair of arms.
 9. The body implantable fabric ofclaim 8, wherein the organ support device includes a first pair oflinearly opposed arms and a second pair of parallel arms, the parallelarms perpendicular to the linearly opposed arms.
 10. The bodyimplantable fabric of claim 9, wherein the organ support device is amale urethra support device including a body, a first pair of linearlyopposed obturator arms, and a pair of substantially parallel suprapubicarms.
 11. The body implantable fabric of claim 8, wherein the organsupport device is a female urethra support tape having one pair oftransobturator arms.
 12. The body implantable fabric of claim 8, whereinthe organ support device is a female pelvic organ support deviceincluding a plurality of arms extending from a body.
 13. The bodyimplantable fabric of claim 1, wherein the knit material has a thicknessof between 0.018-0.028 inches, a basis weight of between 85-115 gramsper square meter, and a pore size of between 0.35-0.80 squaremillimeters.
 14. The body implantable fabric of claim 13, wherein thechain of loops extend along an arm of the organ support device.
 15. Thebody implantable fabric of claim 14, wherein the arm of the support is atransobturator arm sized for passage through an obturator foramen of auser, and the at least one closed loop configures the transobturator armto have a 90 degree tear resistance of more than 5 lbf in accordancewith ASTM D2261.
 16. A body implantable fabric comprising: a mesh knitfrom a filament that forms a sequence of loops, each loop suspended by aneighboring loop, wherein the filament individually encircles each loopto provide a knit mesh of closed loops; and an organ support removedfrom the knit mesh of closed loops and having a body portion and atleast one arm extending from the body portion.
 17. The body implantablefabric of claim 16, wherein each loop comprises an ascending loopsegment separated from a descending loop segment by transverse loopsegment, and the filament secures the ascending loop segment to thedescending loop segment opposite the transverse loop segment.
 18. Thebody implantable fabric of claim 16, wherein the knit mesh of closedloops has an average pore size of greater than 0.4 square millimeters.19. The body implantable fabric of claim. 16, wherein the filament has adiameter of between 0.003 inches to 0.010 inches.
 20. The bodyimplantable fabric of claim 16, wherein the at least one arm has a tearresistance of not less than 5 lbf.
 21. The body implantable fabric ofclaim 16, wherein the organ support removed from the homogenous knitmesh of closed loops has loose ends and a tear resistance of more than 5lbf for a basis weight of less than about 110 g/m².
 22. A bodyimplantable fabric comprising: a knit mesh of closed loops knit from afilament that forms a sequence of loops, each loop suspended by aneighboring loop, wherein the filament individually encircles aplurality of loops in the sequence of loops; and an organ supportremoved from the knit mesh of closed loops and having a body portion andat least one pair of arms extending from the body portion.
 23. The bodyimplantable fabric of claim 22, wherein the filament individuallyencircles each loop in the sequence of loops.
 24. The body implantablefabric of claim 22, wherein the knit mesh of closed loops provide eacharm in the pair of arms with a tear resistance of not less than 5 lbf.25. The body implantable fabric of claim 22, wherein the organ supportis cut from the knit mesh of closed loops.
 26. The body implantablefabric of claim 22, wherein the organ support is laser cut from the knitmesh of closed loops and the pair of arms includes two transobturatorarms extending from opposing ends of the body of the support.
 27. Thebody implantable fabric of claim 26, wherein the knit mesh of closedloops provide the transobturator arms with a tensile strength of morethan 20 lbf.
 28. A body implantable fabric comprising: a knit mesh knitfrom a filament that forms a sequence of loops, each loop suspended by aneighboring loop; an organ support removed from the homogenous knit meshand having a body portion and a pair of arms extending from opposingsides of the body portion; and means for configuring each arm in thepair of arms to have a tear resistance of not less than 5 lbf.